Add-In Circle Puzzles 1-3

This logical addition puzzle was designed to teach children strategy and to think “out-side the box”. In this case the box is round. The goal is to discover the center number by adding the four numbers that surround the center circle, but to determine those four numbers it is easier to start near the outermost rings and fill in empty slots where you know two or three of the numbers already. There is no guessing to these puzzles. All of them can be sorted through logically and methodically. I estimate each of these puzzles can be completed in 10 minutes or less. Have fun.

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PDF Version